DK2632957T3 - Fremgangsmåde til derivatisering af cellulose - Google Patents
Fremgangsmåde til derivatisering af cellulose Download PDFInfo
- Publication number
- DK2632957T3 DK2632957T3 DK11836723.4T DK11836723T DK2632957T3 DK 2632957 T3 DK2632957 T3 DK 2632957T3 DK 11836723 T DK11836723 T DK 11836723T DK 2632957 T3 DK2632957 T3 DK 2632957T3
- Authority
- DK
- Denmark
- Prior art keywords
- cellulose
- liquid
- temperature
- viscosity
- aqueous solution
- Prior art date
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- 229920002678 cellulose Polymers 0.000 title claims description 127
- 239000001913 cellulose Substances 0.000 title claims description 122
- 238000000034 method Methods 0.000 title claims description 44
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 81
- 230000008569 process Effects 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 24
- 239000007864 aqueous solution Substances 0.000 claims description 19
- 238000001212 derivatisation Methods 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000012028 Fenton's reagent Substances 0.000 claims description 3
- 238000007171 acid catalysis Methods 0.000 claims description 3
- MGZTXXNFBIUONY-UHFFFAOYSA-N hydrogen peroxide;iron(2+);sulfuric acid Chemical compound [Fe+2].OO.OS(O)(=O)=O MGZTXXNFBIUONY-UHFFFAOYSA-N 0.000 claims description 3
- 238000010306 acid treatment Methods 0.000 claims description 2
- 238000005815 base catalysis Methods 0.000 claims 1
- 239000003637 basic solution Substances 0.000 claims 1
- 235000010980 cellulose Nutrition 0.000 description 115
- 239000000243 solution Substances 0.000 description 26
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 24
- 229910002092 carbon dioxide Inorganic materials 0.000 description 12
- 238000004090 dissolution Methods 0.000 description 11
- 238000001556 precipitation Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 8
- 239000003513 alkali Substances 0.000 description 8
- 239000001569 carbon dioxide Substances 0.000 description 8
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 8
- 239000008108 microcrystalline cellulose Substances 0.000 description 8
- 229940016286 microcrystalline cellulose Drugs 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000000084 colloidal system Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000003760 magnetic stirring Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 239000001117 sulphuric acid Substances 0.000 description 5
- 235000011149 sulphuric acid Nutrition 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 3
- 229920002301 cellulose acetate Polymers 0.000 description 3
- 229920003086 cellulose ether Polymers 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 239000004627 regenerated cellulose Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical group OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000012412 chemical coupling Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- GOYYUYNOGNSLTE-UHFFFAOYSA-N copper;2-azanidylethylazanide Chemical compound [Cu+2].[NH-]CC[NH-].[NH-]CC[NH-] GOYYUYNOGNSLTE-UHFFFAOYSA-N 0.000 description 2
- 230000007071 enzymatic hydrolysis Effects 0.000 description 2
- 238000006047 enzymatic hydrolysis reaction Methods 0.000 description 2
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 2
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 230000001404 mediated effect Effects 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 229920003087 methylethyl cellulose Polymers 0.000 description 2
- 230000000269 nucleophilic effect Effects 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- BLALBRWEAJQIIL-UHFFFAOYSA-N [Cl].CC(O)=O Chemical compound [Cl].CC(O)=O BLALBRWEAJQIIL-UHFFFAOYSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000005829 chemical entities Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 229960001031 glucose Drugs 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- TWNIBLMWSKIRAT-VFUOTHLCSA-N levoglucosan Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@H]2CO[C@@H]1O2 TWNIBLMWSKIRAT-VFUOTHLCSA-N 0.000 description 1
- 239000012978 lignocellulosic material Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 methoxy, acetyl Chemical group 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002772 monosaccharides Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
- C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/003—Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/02—Rendering cellulose suitable for esterification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/06—Rendering cellulose suitable for etherification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B16/00—Regeneration of cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/06—Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/20—Chemically or biochemically modified fibres
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Paper (AREA)
Claims (11)
1. Fremgangsmåde til derivatisering af cellulose, der omfatter følgende fortløbende trin: a) blanding af cellulose med en viskositet på under 900 ml/g med en vandig opløsning til opnåelse af en væske, hvor partikler, der omfatter cellulose i nævnte væske, har en diameter på maksimalt 200 nm, hvor den vandige opløsnings temperaturer er under 20 °C, og hvor den vandige opløsnings pH-værdi er over 12, hvor viskositeten er det grænseviskositetstal bestemt i henhold til ISO 5351, b) udsættelse af væsken for mindst ét af følgende trin: i) mindskelse af væskens pH-værdi med mindst 1 pH-enhed, ii) forøgelse af temperaturen med mindst 20 °C, og c) derivatisering af cellulosen.
2. Fremgangsmåde ifølge krav 1, der endvidere omfatter et trin før trin a), hvor cellulosens viskositet sænkes til under 900 ml/g ved mindst én valgt fra gruppen bestående af behandling med syre, Fentons reagens og basisk opløsning.
3. Fremgangsmåde ifølge et hvilket som helst af kravene 1-2, hvor den vandige opløsning omfatter mindst 2 vægtprocent NaOH.
4. Fremgangsmåde ifølge et hvilket som helst af kravene 1-3, hvor væsken filtreres mellem trin a) og trin b).
5. Fremgangsmåde ifølge et hvilket som helst af kravene 1-4, hvor væsken centrifugeres mellem trin a) og trin b).
6. Fremgangsmåde ifølge et hvilket som helst af kravene 1-5, hvor pH-værdien mindskes i trin b) ved tilsætning afen syre.
7. Fremgangsmåde ifølge et hvilket som helst af kravene 1-6, hvor pH-værdien mindskes i trin b) ved tilsætning af mindst én kemisk enhed valgt blandt CO2 og H2CO3.
8. Fremgangsmåde ifølge et hvilket som helst af kravene 1-7, hvor temperaturen er under 10 °C i trin a).
9. Fremgangsmåde ifølge et hvilket som helst af kravene 1-8, hvor cellulose, der ikke er blevet opløst og/eller suspenderet i trin a) til en partikelstørrelse på under 200 nm, recirkuleres til trin a).
10. Fremgangsmåde ifølge et hvilket som helst af kravene 1-9, hvor trin c) omfatter kemisk derivatisering af cellulose under anvendelse af én valgt blandt syrekatalyse og basekatalyse.
11. Fremgangsmåde ifølge et hvilket som helst af kravene 1-9, hvor trin c) omfatter kemisk derivatisering af cellulose under anvendelse af oxidering.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40704710P | 2010-10-27 | 2010-10-27 | |
| PCT/SE2011/051270 WO2012057684A1 (en) | 2010-10-27 | 2011-10-26 | Process for the derivatization of cellulose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK2632957T3 true DK2632957T3 (da) | 2019-03-04 |
Family
ID=45994172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK11836723.4T DK2632957T3 (da) | 2010-10-27 | 2011-10-26 | Fremgangsmåde til derivatisering af cellulose |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9469693B2 (da) |
| EP (1) | EP2632957B1 (da) |
| CN (1) | CN103237814B (da) |
| BR (1) | BR112013010451B1 (da) |
| DK (1) | DK2632957T3 (da) |
| ES (1) | ES2711754T3 (da) |
| WO (1) | WO2012057684A1 (da) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469688B (zh) * | 2013-09-29 | 2016-04-20 | 北京林业大学 | 一种玉米芯改性制备纸张增强剂的方法 |
| CN114481656B (zh) | 2015-06-11 | 2024-03-22 | 思科有限责任公司 | 用于从植物基和再生材料生产纸浆、能源和生物衍生物的方法和系统 |
| SE541675C2 (en) | 2016-10-19 | 2019-11-26 | Re Newcell Ab | Recycling of cellulosic textiles |
| FI3551790T3 (sv) | 2016-12-06 | 2023-07-05 | Re Newcell Ab | Cellulosafibrer |
| JP2020536133A (ja) * | 2017-10-03 | 2020-12-10 | ダウ グローバル テクノロジーズ エルエルシー | 低粘度セルロースエーテル製造のための簡略化された方法 |
| EP3473244A1 (en) | 2017-10-20 | 2019-04-24 | Veru Inc. | Controlled release oral tamsulosin hydrochloride |
| EP3473245A1 (en) | 2017-10-20 | 2019-04-24 | Veru Inc. | Controlled release oral tamsulosin hydrochloride |
| CN108049230A (zh) * | 2017-12-14 | 2018-05-18 | 天津科技大学 | 一种铁催化过氧化氢氧化制备纳米纤维素方法 |
| CN111868316B (zh) | 2018-01-12 | 2023-09-05 | 希尔科公司 | 从废弃纺织品中回收棉纤维和聚酯纤维的方法 |
| SE543048C2 (en) | 2018-12-19 | 2020-09-29 | Re Newcell Ab | A method for separating cellulosic fibers from non-cellulosic fibers |
| EP3882380B1 (en) | 2020-03-16 | 2022-04-27 | Re:NewCell AB | One stage method for acid metal removal and bleach |
| EP4402202A4 (en) | 2021-09-16 | 2025-07-09 | Circ Llc | PROCESS FOR FORMING A POLYESTER FROM A REGENERATED DIACID FORMED FROM THE DEPOLYMERIZATION OF A WASTE MATERIAL |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1658606A (en) | 1923-03-15 | 1928-02-07 | Lilienfeld Leon | Cellulose solution and process for making same |
| US4089745A (en) | 1976-12-27 | 1978-05-16 | Standard Brands Incorporated | Process for enzymatically converting cellulose derived from corn hulls to glucose |
| JPS60139873A (ja) | 1983-12-26 | 1985-07-24 | 旭化成株式会社 | 繊維材料の改質方法 |
| EP0344371A1 (en) | 1988-05-31 | 1989-12-06 | Uop Inc. | Hydrolysis of corn kernel hulls to monosaccharides |
| SU1669917A1 (ru) * | 1989-03-13 | 1991-08-15 | Научно-производственное объединение "Полимерсинтез" | Способ получени карбоксиметилцеллюлозы |
| US5410034A (en) | 1994-02-24 | 1995-04-25 | The United States Of America As Represented By The Secretary Of Agriculture | Alkaline method for dissolving cellulose |
| JP4028003B2 (ja) | 1996-05-31 | 2007-12-26 | 旭化成株式会社 | セルロース溶液の調製方法 |
| DE19715617A1 (de) * | 1997-04-15 | 1998-10-22 | Zimmer Ag | Verfahren für die modifizierte Herstellung von Cellulosecarbamat |
| US6106763A (en) | 1997-11-20 | 2000-08-22 | Institute Of Chemical Fibres | Process for producing cellulosic mouldings |
| US6541627B1 (en) * | 1997-12-04 | 2003-04-01 | Asahi Kasei Kabushiki Kaisha | Cellulose dispersion |
| US7108907B1 (en) | 1999-11-08 | 2006-09-19 | Asahi Kasei Kabushiki Kaisha | Cellulose dope and method for producing the same |
| CN1282773C (zh) * | 2005-05-30 | 2006-11-01 | 武汉大学 | 二步凝固浴法制备再生纤维素纤维的方法 |
| CN1285644C (zh) * | 2005-06-29 | 2006-11-22 | 东华大学 | 一种溶解纤维素的溶剂及其制备方法和用途 |
| FI20055381L (fi) | 2005-07-01 | 2007-01-02 | M Real Oyj | Menetelmä selluloosan liuottamiseksi ja selluloosahiukkasten valmistamiseksi |
| US7670813B2 (en) | 2006-10-25 | 2010-03-02 | Iogen Energy Corporation | Inorganic salt recovery during processing of lignocellulosic feedstocks |
| US20100143974A1 (en) | 2007-02-01 | 2010-06-10 | Chang-Ho Chung | Process for Sugar Production from Lignocellulosic Biomass Using Alkali Pretreatment |
| US8758517B2 (en) * | 2009-04-28 | 2014-06-24 | Re:Newcell Lux S.A.R.L | Process for the hydrolysis of cellulose |
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2011
- 2011-10-26 US US13/880,798 patent/US9469693B2/en active Active
- 2011-10-26 WO PCT/SE2011/051270 patent/WO2012057684A1/en not_active Ceased
- 2011-10-26 DK DK11836723.4T patent/DK2632957T3/da active
- 2011-10-26 EP EP11836723.4A patent/EP2632957B1/en not_active Not-in-force
- 2011-10-26 ES ES11836723T patent/ES2711754T3/es active Active
- 2011-10-26 BR BR112013010451-1A patent/BR112013010451B1/pt not_active IP Right Cessation
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|---|---|
| EP2632957A4 (en) | 2014-08-27 |
| CN103237814A (zh) | 2013-08-07 |
| US9469693B2 (en) | 2016-10-18 |
| CN103237814B (zh) | 2016-06-01 |
| EP2632957B1 (en) | 2018-11-21 |
| EP2632957A1 (en) | 2013-09-04 |
| BR112013010451A2 (pt) | 2016-08-09 |
| WO2012057684A1 (en) | 2012-05-03 |
| BR112013010451B1 (pt) | 2020-02-11 |
| ES2711754T3 (es) | 2019-05-07 |
| US20130324710A1 (en) | 2013-12-05 |
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